Barratt has been focusing on “price not volume” and has seen its operating margin rise “significantly” from 0.6% in 2009 to 5%, it announced today (February 24). Reporting to the City on its half year results to 31 December 2010, the volume housebuilder still posted a pre-tax loss of £4.6 million, but this was down from last year’s £178.4 million. …